Ordinal Scale is a mixed reality game, but it has a dark secret like the Sword Art Online death game. The secret is that if you lose in the game, you will lose your memories. One day, Asuna, Kirito, Sillica, and Lisbeth were playing this game along with some other players. Asuna went to protect Sillica, but Eiji, a boy player, pushed her, and Asuna got hit by the boss badly, sending her HP all the way to 1.

Sillica: Asuna! Hang on!

Kirito: ASUNA!

Lisbeth: I HATE YOU, EIJI!

Asuna: I...I...